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A corbel arch (or corbeled / corbelled arch) is an arch-like construction method that uses the architectural technique of corbeling to span a space or void in a structure, such as an entranceway in a wall or as the span of a bridge. A corbel vault uses this technique to support the superstructure of a building'sroof.

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The Megalithic Passage Tomb at Newgrange was built about 3200 BC. ... The passage and chamber of Newgrange are illuminated by the winter solstice sunrise.

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A dolmen is a type of single-chamber megalithic tomb, usually consisting of two or more vertical megaliths supporting a large flat horizontal capstone ("table"), although there are also more complex variants. Most date from the early Neolithic(4000–3000 BC). Dolmens were typically covered with earth or smaller stones to form a tumulus. In many instances, that covering has weathered away, leaving only the stone "skeleton" of the burial mound intact.

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The court cairn or tomb is a megalithic type of chamber tomb and gallery grave, specifically a variant of the chambered cairn, found in western and northern Ireland, and in mostly southwest Scotland (where it may also be called a horned cairn or Clyde-Carlingford tomb), around 4000–3500 BC

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Ireland has a number of megalithic monuments, typically comprising one of four types of megalithic tombs: court cairns, passage tombs, portal dolmens and wedge tombs.

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a large stone that forms a prehistoric monument (e.g. a standing stone) or part of one (e.g. a stone circle).

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Quern-stones are stone tools for hand-grinding a wide variety of materials. They are used in pairs. The lower, stationary, stone is called a quern, while the upper mobilestone is called a handstone. They were first used in the Neolithic to grind cereals into flour.

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Wattle and daub is a composite building material used for making walls, in which a woven lattice of wooden strips called wattle is daubed with a sticky material usually made of some combination of wet soil, clay, sand, animal dung and straw.

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Porcellanite is a hard, dense rock somewhat similar in appearance to unglazed porcelain

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Pollen is a fine to coarse powdery substance comprising pollen grains

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The Neolithic was a period in the development of human technology, beginning about 10,200 BC.